There have been huge advances in this LED (Light Emitting Diode) technology in the last few years, and they now offer a genuine alternative to conventional light bulbs.

Ultra energy efficient - around 85% better than incandescant
Ultra long life - with average use at least 25,000 hours (That's around 25 years to you and me!)
100% Instant light as soon as you switch on Life is not shortened by frequent on/off
No mercury or UV Bayonet fitting